|
|
PDF LTM4676 Data sheet ( Hoja de datos )
| Número de pieza | LTM4676 | |
| Descripción | Dual 13A or Single 26A uModule Regulator | |
| Fabricantes | Linear Technology | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de LTM4676 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
|
No Preview Available !
Features
LTM4676
Dual 13A or Single 26A
µModule Regulator with Digital
Power System Management
Description
n Dual, Fast, Analog Loops with Digital Interface
for
Control and Monitoring
n Wide Input Voltage Range: 4.5V to 26.5V
n Output Voltage Range: 0.5V to 5.4V (4V on VOUT0)
n ±1% Maximum DC Output Error Over Temperature
n ±2.5% Current Readback Accuracy at 10A Load
n 400kHz PMBus-Compliant I2C Serial Interface
n Integrated 16-Bit ∆Σ ADC
n Constant Frequency Current Mode Control
n Parallel and Current Share Multiple Modules
n 16 Slave Addresses; Rail/Global Addressing
n 16mm × 16mm × 5.01mm BGA Package
Readable Data:
n Input and Output Voltages, Currents, and Temperatures
n Running Peak Values, Uptime, Faults and Warnings
n Onboard EEPROM Fault Log Record
Writable Data and Configurable Parameters:
n Output Voltage, Voltage Sequencing and Margining
n Digital Soft-Start/Stop Ramp
n OV/UV/OT, UVLO, Frequency and Phasing
Applications
n System Optimization, Characterization and Data Min-
ing in Prototype, Production and Field Environments
n Telecom, Datacom, and Storage Systems
The LTM®4676 is a dual 13A or single 26A step-down
µModule® (micromodule) DC/DC regulator featuring re-
mote configurability and telemetry-monitoring of power
management parameters over PMBus— an open standard
I2C-based digital interface protocol . The LTM4676 is
comprised of fast analog control loops, precision mixed-
signal circuitry, EEPROM, power MOSFETs, inductors and
supporting components.
The LTM4676’s 2-wire serial interface allows outputs to be
margined, tuned and ramped up and down at programmable
slew rates with sequencing delay times. Input and output
currents and voltages, output power, temperatures, uptime
and peak values are readable. Custom configuration of
the EEPROM contents is not required. At start-up, output
voltages, switching frequency, and channel phase angle
assignments can be set by pin-strapping resistors. The
LTpowerPlay™ GUI and DC1613 USB-to-PMBus converter
and demo kits are available.
The LTM4676 is offered in a 16mm × 16mm × 5.01mm
BGA package available with SnPb or RoHS compliant
terminal finish.
L, LT, LTC, LTM, Linear Technology, the Linear logo, µModule, Burst Mode and PolyPhase
are registered trademarks and LTpowerPlay is a trademark of Linear Technology Corporation.
All other trademarks are the property of their respective owners. Protected by U.S. Patents
including 5408150, 5481178, 5705919, 5929620, 6144194, 6177787, 6580258, 7420359,
8163643. Licensed under U.S. Patent 7000125 and other related patents worldwide.
Click to view associated Video Design Idea.
Typical Application
Dual 13A µModule Regulator with Digital
Interface for Control and Monitoring*
VIN
5.75V TO 26.5V 22µF
×3
ON/OFF CONTROL
FAULT INTERRUPTS,
POWER SEQUENCING
VIN0
VIN1
SVIN
VOUT0
VOSNS0+
RUN0
RUN1
VOSNS0–
LTM4676 VOUT1
GPIO0
GPIO1
VOSNS1
PWM CLOCK AND
TIME-BASE
SYNCHRONIZATION
REGISTER WRITE
PROTECTION
SYNC
SHARE_CLK
WP GND
*FOR COMPLETE CIRCUIT, SEE FIGURE 44
SGND
SCL
SDA
ALERT
4676 TA01a
VOUT0,
ADJUSTABLE
UP TO 13A
LOAD0
100µF
×7
VOUT1,
ADJUSTABLE
UP TO 13A
LOAD1
100µF
×7
I2C/SMBus I/F WITH
PMBus COMMAND SET
TO/FROM IPMI OR OTHER
BOARD MANAGEMENT
CONTROLLER
Using PMBus and LTpowerPlay to Monitor Telemetry and Margin
VOUT0/VOUT1 During Load Pattern Tests. 10Hz Polling Rate. 12VIN
Output Voltage Readback, VOUT Margined 7.5% Low
1.1 1.9
1.0 1.8
0.9 1.7
0.8
0
1.6
3 6 9 12
TIME (SEC)
4677 TA01b
Input Current Readback
1.5 2.4
1.0 1.6
0.5 0.8
00
0 3 6 9 12
TIME (SEC)
4676 TA01d
Output Current Readback, Varying Load Pattern
15 15
10 10
55
00
0 3 6 9 12
TIME (SEC)
4676 TA01c
Power Stage Temperature Readback
60 60
57 57
54 54
51 51
0 3 6 9 12
TIME (SEC)
4676 TA01e
4676fd
For more information www.linear.com/LTM4676
1
1 page  
LTM4676
E lectrical Characteristics The l denotes the specifications which apply over the specified internal
sFoeRpteEtirQnaUgtisEnNganCtedYm_pSpeWer rTIaeTtsCutrHeC=irrac5nu0gi0tek1H(,Nzuoantnleed2sVs).OoSUthpTneerccwiofiimseedmnaaosntdeeeaddc.htoin1d.i0v0id0uVaulnoluetspsuot tchhearnwniesel (nNootteed4. )C.oTnAfi=gu2r5e°dCw, VitIhN
f=ac1t2oVry,-RdeUfNanul=t
5V,
EEPROM
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
tDELAY(0ms)
∆VOUTn (LS)
Turn-On Delay Time
Peak Output Voltage
Deviation for Dynamic
Load Step
Time from First Rising Edge of RUNn to Rising Edge of GPIOn.
TMMVOIFFNNRRH___aDGGvEPPinLIIgOOAY__BRPneReE=nSO0PPEmOsAstNGa,SbATlETOisnENhn=e_=dR0xI0fS0ox0Er0n0a10t=0.L03e,masst, 170ms
Load: 0A to 6.5A and 6.5A to 0A at 6.5A/µs, Figure 44 Circuit,
VOUTn = 1V, VIN = 12V (Note 12)
l 2.75 3.1 3.5
ms
50 mV
tSETTLE
IOUTn(OCL_PK)
Settling Time for
Dynamic Load Step
Output Current Limit,
Peak
Load: 0A to 6.5A and 6.5A to 0A at 6.5A/µs, Figure 44 Circuit,
VOUTn = 1V, VIN = 12V (Note 12)
Cycle-by-Cycle Inductor Peak Current Limit Inception
35 µs
22.5 A
IOUTn(OCL_AVG)
Output Current Limit,
Time Averaged
Time-Averaged Output Inductor Current Limit Inception Threshold,
Commanded by IOUT_OC_FAULT_LIMITn (Note 12)
Spec1if5ic.6aAti;oSne(eOIuOt-pRuBt-ACCuCrrent
Readback Accuracy)
Control Section
VFBCM0
VFBCM1
VOUT0-RNG0
Channel 0 Feedback Input
Common Mode Range
VVOOSSNNSS00–+
Valid
Valid
Input
Input
Range
Range
(Referred
(Referred
to
to
SGND)
SGND)
Channel 1 Feedback Input SGND Valid Input Range (Referred to GND)
Common Mode Range VOSNS1 Valid Input Range (Referred to SGND)
Channel 0 Full-Scale
(Notes 7, 15)
Command Voltage,
Range 0
VOUT0 Commanded to 4.095V, MFR_PWM_CONFIG[6] = 0b
Resolution
LSB Step Size
l –0.1
l
l –0.3
l
0.3
4.25
0.3
5.5
4.015
4.176
12
1.375
V
V
V
V
V
Bits
mV
VOUT0-RNG1
Channel 0 Full-Scale
Command Voltage,
Range 1
(Notes 7, 15)
VOUT0 Commanded to 2.750V, MFR_PWM_CONFIG[6] = 1b
Resolution
LSB Step Size
2.711
2.788
12
0.6875
V
Bits
mV
VOUT1-RNG0
Channel 1 Full-Scale
Command Voltage,
Range 0
(Notes 7, 15)
VROeUsoT1luCtioomn manded to 5.500V, MFR_PWM_CONFIG[5] = 0b
LSB Step Size
5.422
5.576
12
1.375
V
Bits
mV
VOUT1-RNG1
RVSENSE0+
Channel 1 Full-Scale
Command Voltage,
Range 1
VOSNS0+ Impedance to
SGND
(Notes 7, 15)
VOUT1 Commanded to 2.750V, MFR_PWM_CONFIG[5] = 1b
Resolution
LSB Step Size
0.05V ≤ VVOSNS0+ – VSGND ≤ 4.1V
2.711
2.788
12
0.6875
41
V
Bits
mV
kΩ
RVSENSE1
VOSNS1 Impedance to
SGND
0.05V ≤ VVOSNS1 – VSGND ≤ 5.5V
37 kΩ
tON(MIN)
Minimum On-Time
(Note 8 )
90 ns
Analog OV/UV (Overvoltage/Undervoltage) Output Voltage Supervisor Comparators (VOUT_OV/UV_FAULT_LIMIT and VOUT_OV/UV_WARN_LIMIT Monitors)
NOV/UV_COMP
Resolution, Output
Voltage Supervisors,
Channels 0 and 1
(Note 15)
8 Bits
V0OU-RNG
Output Voltage
Comparator Threshold
Detection Range,
Channel 0
(Note 15)
High Range Scale, MFR_PWM_CONFIG[6] = 0b
Low Range Scale, MFR_PWM_CONFIG[6] = 1b
1
4.095
V
0.5 2.7 V
For more information www.linear.com/LTM4676
4676fd
5
5 Page 
LTM4676
Typical Performance Characteristics TA = 25°C, 12VIN to 1VOUT, unless otherwise noted.
EVVMfOIfFNUiRc=Ti_0eSPnaVWcnIydNMvV=_sOMVOUIOTNu1ntDpP=EuantIrN[Ca1Tul:lV0rer]CleCe=n,dt1,,05bVIN,
100
95
90
85
80
75
3.3VOUT, 425kHz
2.5VOUT, 425kHz
70
1.8VOUT, 425kHz
1.5VOUT, 350kHz
65
1.2VOUT, 350kHz
1.0VOUT, 350kHz
60 0.9VOUT, 350kHz
0 2 4 6 8 10 12 14 16 18 20 22 24 26
OUTPUT CURRENT (A)
4676 G01
Efficiency vs Output Current,
V2M4IFNVR=IN_,SPVVWIONMU=T_0MVaIONnndD,EVInNO[UT1VT:10C]CP=aOr1pa0ellbne,led,
100
3.3VOUT, 750kHz
1.2VOUT, 350kHz
95
2.5VOUT, 650kHz
1.8VOUT, 500kHz
1.0VOUT, 250kHz
0.9VOUT, 250kHz
90 1.5VOUT, 425kHz
85
80
75
70
65
60
0 2 4 6 8 10 12 14 16 18 20 22 24 26
OUTPUT CURRENT (A)
4676 G04
Efficiency vs Output Current,
8MVVIFNIRN=,_SVPVOWIUNMT0=_aMVnIONdnDV,EOInNU[TT11V:0CP]Ca=rOap1lle0enbl,ed,
100
95
90
85
80
75
3.3VOUT, 575kHz
2.5VOUT, 500kHz
70
1.8VOUT, 425kHz
1.5VOUT, 350kHz
65
1.2VOUT, 350kHz
1.0VOUT, 350kHz
60 0.9VOUT, 350kHz
0 2 4 6 8 10 12 14 16 18 20 22 24 26
OUTPUT CURRENT (A)
4676 G02
Efficiency vs Output Current,
VVMOIFNUR=T_1SP=VW5INMV=,_VMVOIONUnDT,0EIn=N[TO1V:F0CF]C,
Open,
= 10b
100
95
90
85
80
75
70
65
8VIN, 500kHz
12VIN, 750kHz
24VOUT, 1MHz
60
0 1 2 3 4 5 6 7 8 9 10 11 12 13
OUTPUT CURRENT (A)
4676 G05
Efficiency vs Output Current,
V1M2IFNVR=IN_,SPVVWIONMU=T_0MVaIONnndD,EVInNO[UT1VT:10C]CP=aOrp1ae0llnbe,led,
100
95
90
85
80
75
3.3VOUT, 650kHz
2.5VOUT, 575kHz
70
1.8VOUT, 500kHz
1.5VOUT, 425kHz
65
1.2VOUT, 350kHz
1.0VOUT, 350kHz
60 0.9VOUT, 350kHz
0 2 4 6 8 10 12 14 16 18 20 22 24 26
OUTPUT CURRENT (A)
4676 G03
Single Phase Single Output
Burst Mode Efficiency,
VMIFNR=_SPVWINM=_MVIONnD,EInN[T1V:0C]C
Open,
= 01b
90
80
70
60
50
24VIN TO 5VOUT, 1MHz
40 12VIN TO 1.5VOUT, 425kHz
0 1 2 3 4 5 6 7 8 9 10 11 12 13
OUTPUT CURRENT (A)
4676 G06
For more information www.linear.com/LTM4676
4676fd
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet LTM4676.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| LTM4675 | Dual 9A or Single 18A uModule Regulator | Linear Technology |
| LTM4676 | Dual 13A or Single 26A uModule Regulator | Linear Technology |
| LTM4676A | Dual 13A or Single 26A uModule Regulator | Linear Technology |
| LTM4677 | Dual 18A or Single 36A uModule Regulator | Linear Technology |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |